Dumping-car.



No. 634,682. Patented Oct. :0, I899. M. G. BUNNELL.

DUHPING CAR.

(Application filed July 22, 1898.)

4 Sheets-Shani I.

(No Modei.) V

Patented Oct. l0, I899. M. G. BUNNELL.

DUMPING GAB;

(Applicatioh filed July- 22 19am 4 shuts-shut 2,

(Na Model.)

, Patented Oct. I0, 1899. M. G. BUNNELL.

DUMPING CAR.

(Aixplicatinn filed July 22, 1898.|

4 Sheets-Sheet 3 (Nu Model.)

frame/7%? h: ZS-n 5. fia/vmd 2% w f Patentd 001.10, I899.

' No. 634,682. v

M. G. BUNNELL.

DUMPING CAR.

(Application filed July 22, 1898..

4 Sheets-Sheet 4'.

(No Model.)

m: mums virus on, Pm'rrsumn, vusumnrou. n c.

UNITED STATES PATENT OFFICE.

MORTON e. BUNNELL, or CHICAGO, ILLINOIS, iissienoaro FREDERICK o.

. AUSTIN, or SAME PLACE.

oumpmcfoAu.

SPECIFICATION formingpart of Letters Patent No. 634,682, dated October 10, 1899. Application filed July 22, 1898. Serial No. 686,629. til l0 model.)

To aZZ whom it may concern:

Be it known that I, MORTON G. BUNNELL, a citizen of the United States, residing at Chicago,in the county of Cook, State of Illinois, have invented a new and useful Improvement in Dumping-Oars or otherWheeled Dumping- Carriers, of which the following is aspecification.

The objects of my invention are to provide a well-balanced tilting body or receptacle which can be readily tilted for the purpose of dumping the load, to provide an automatic gate which can open to an extent to permit the load to be freely discharged and which can be swung out of the way when so desired, and to generally provide a simple, reliable, and highly-efficient construction.

To the attainment of the foregoing and other useful ends my invention consists in matters hereinafter set forth.

In the accompanying drawings, Figure 1 shows an end elevation of a dumping-car embodying the principles of my invention, Fig. 2 shows the car in side elevation. Fig. 3 is a section on line a: a: in Fig. 2with one of the gates swung out of the way. Fig. shows the car in end elevation with certain changes in details of the devices for upholding the. Fig. 5 is a detail showing one of the gates. break-j oi nts comprised in thegate-oontrollin g device. v v

The dumping-car illustrated comprises a wheel-supported truck-frame and a tilting body or receptacle A, having a rocker-base arranged to bear and rock upon the base-support afforded by the truck-frame. The rockerbase could be formed by a single rocker secured to the bottom of the body and extended substantially from end to end thereof or of a plurality of segmental-shaped rockers similarly secured, a simple and preferred arrangement, however, being to rigidly secure segmental-shaped rockers B, respectively, to 0p posite ends of'the body. The curved bearing-faces of the rockers, which as a whole form-the rocker base and rest upon the truckframe, are formed on the arcs of concentric circles having a common axis which extends longitudinally through the body along a line midway of the longitudinal sides of the latter, in which way the tilting body will normally balance and tend to maintain a horizontal position. As a further preferred arrangement the said axis is located midway or nearly midway of the top and bottom of the body,so-that when the latter is loaded it can be more easily tilted for the purpose of dumping the load. This will be understood from the fact that the rockers are, in effect, wheels rigidly secured to the body and adapted to roll upon the truck-frame to a limited extent, whereby when the body is tilted the curved bearing-faces of the rockers, representing segmental portions of wheels,will practically roll to a limited extent upon the truck-frameand permit the body to have a compound movement involving a tilting action and a lateral shift, as clearly illustrated by dotted lines in Fig.1,wherein it will be seen that the body has tilted about a laterally-shifting axis,which latter maintains auniform height relatively to the base-support or truck-frame whereon the rockers operate. The wheeled base-support or truck-frame can be variously constructed vi'naccordance with approved mechanical principles. As a simple and preferred construction, however, it may comprise transversely-arranged rails or channel-bars 0, secured upon longitudinally-arranged bars D, the whole being suitably braced and otherwise adapted to provide a wheeled truckframe. By providing the short cross-rails G the rockers canbe arranged to bear upon such rails, and in order to prevent end shift of the body the rockers can be flanged, as at rangement being such that during the comb, so as to engage the rails after the manner bined lateral movement and tilt of the body in dumping a load therefrom one gate remains closed and partakes of the compound motion of the body, while the gate at theside from which the load is to be dumped also partakes of the lateral movement of the body, but is maintained at a uniform height relatively to the horizontal plane'traversed by the rockers and is therefore neither raised nor lowered. Strictly speaking, therefore,

I the gate at the determined dumping side ,of

the car has only an outward lateral movement during the operation of dumping, and the descending longitudinal side portion of the tilting body leaves the gate, thereby affording'for the discharge of the load a space proportional in height to the extent to which the body is tilted and consequent degree of separation between theloweredge of the gate and the bottom of the tilting body. In effect, however, the gate opens relatively to the tilting body-that is to say, there is a relative movement between the two.

In the first three figures of the drawings the gates are provided with arms F, secured to the ends of the gates and pivoted to the ends of the tilting body. The gates are upheld by rollers G, arranged to bear upon and traverse the truck-frame during the tilting action of the body, the rollers being, for example, arranged to bear upon the cross-rails G. -The construction of the arms can be varied, a simple and desirable arrangement being to form each arm of bars f, converging from upper and lower end corners of the gate to the point at which the arm is hung upon the body, and to provide each arm with a rigidlysecured support, hanger, or bracket g, having a roller journaled in its lower end. As a further preferred arrangement the arms are pivoted to swing about an axis common to the circles of which the curved bearingfaces of the rockers form arcs. \Vhen the body is in its normal horizontal position, as shown by full lines in Fig. 1, the gates will be closed. To facilitate loading, however, either gate can be raised from one side of the car and swung to the opposite side thereof, as in Fig. 3, so as to be out of the way. When the'body is tilted, it will also move laterally, and while one gate will rise with the ascending side of the body the other gate, although moving laterally toward the dumping side of the.car, will be upheld by its roller G, so that the descending side of the body will leave such gate, and thereby leave a clear and wide dumping-space for the discharge of the load. The gates can be temporarily locked to the body by any suitable locking device, and when thus secured their rollers will obviously prevent the body from accidental tilt. To further prevent accidental tilt and also avoid accidental side shift on the part of the body, other suitable temporary locking connection between the body and the truck-frame can be employed-for example, detachable stay-chains H.

In the construction illustrated by Fig. 4 the side channels of the cross-rails O afford ways in which rollers I, generally corresponding with the rollers G of preceding figures, are arranged to operate. In this figure the gates are respectively provided at their ends with arms K K, pivoted and generally corresponding in purpose and function with the arms F of preceding figures; but in place of rigid brackets secured to the arms and provided with the rollers each arm has a jointed pendent leg or extension provided with a roller and arranged to break joint under certain conditions. \Vith further reference to this arrangement the gate-arm K,which is pivoted as in preceding figures, is extended from its pivoted part or provided with a leg or extension L, which is rigid with the arm K and furnished with one of the rollers I. Likewise the arm K is rigid with an extension or leg L, which'is also provided with one of the rollers I. Each of the two legs or arm extensions L L is jointed, as in Fig. 5, so that it can bend or break joint one way, a simple arrangement being to secure one portion of the leg or arm extension to a coupling M and to pivot the other portion thereof to such coupling, as at m. Then, therefore, the tilting hotly is tilted, as in Fig. 4, the arm extension L will break joint, as indicated in dotted lines, and thereby permit the arm K to move with the tilting body, but relatively thereto to remain inactive. 'On the other hand, however, the arm extension L will remain straight and uphold the gate at the dumping side of the car, while the body thereof tilts, it being observed that the weight of the gate (shown at the right in Fig. 4) will, under the conditions therein illustrated by dotted lines, simply tend to straighten the arm extension L, which is of course prevented from swinging up by reason of the engagement of its roller in the side channel of the cross-rails O. The arm extensions diverge downwardly from the point at which the arms are pivoted and are arranged so that the extension from an arm at one side of the pivotal point normally inclines downwardly and away from such pivotal point, as shown in full lines. WVhen, therefore, the body is tilted one arm extension will break joint, while the other arm extension will move in a direction to permit its roller to travel toward the middle of the length of the channel in which it works, as indicated in dotted lines, it being understood that in this figure the body is provided with a rocker-base or rockers B arranged and operating as in preceding figures. While the gate-supporting devices of Fig. 4 involve certain principles involvedin the gatesupporting devices of the preceding figures, they also involve certain novel departures therefrom in construction or details, and hence I have elected to claim in another application, filed of even date herewith, Serial No. 586,630, such matters of Fig. 4 as are not specifically claimed in this application.

With further reference to the compound mot-ion of the car-body it will be seen that decided advantages are secured by providing a tilting body having a rocker-base and balanced about a longitudinally-extending horizontal axis and that such arrangement can be readily secured by forming the curved bearing-face of the rocker-base on the line of a circle having as its center a horizontal axis extending longitudinally and centrally or substantially centrally through such bodythat is to say, ahorizontal axis extending longitudinally through the body on aline midway or substantially midway of opposite sides of the body and also midway or" substantially midwayof the planes of the top and bottom of v the body. When the said axis thus extends through the body and thelatter is loaded sub"- stantially level with the plane of its top, the

body will in dumping tilt about a horizontal axis extending longitudinally and centrally through the load, which may also be said to comprise the weight of the tilting body, and;

while the loaded car-body isthus tilting about such cen trally located axisthe latter will shift horizontally and laterally toward theside of the car at which the contents of the body are to be dumped. The load comprising the weight of the bod y will therefore be so well balancedthat it will "be an extremely'easy matter to tilt the body in dumping,.and after dumping the body can be likewise easily righted;v also, from the initial to the termi-' nal portions of the operation of dumping the. movement of the body will be steady, and a disposition on the part of the body to lurch to one side and pitch of the car-truck willbe avoided, it being observed that when the body is tilted into position to discharge its contents the center of gravityin place of being outside the rails or wheels will be between the latter and on a vertical line through the truck-support for the rocker-base. It is also to be observed that the curved face of the rocker-base can be made on the line of a circle of comparatively small radius, so as to secure quick tilting action; and that the transverse track-support for the rocker-base can be ar-- ranged on a horizontal plane above the wheels. This permits the body to dump freely and to clear its dumped contents without endangering the security of the body as a tilting member on the truck-frame.

What I claim as my invention is V 1. A dumping-car or the like comprising a tilting body supported by a rocker-base'upon a suitable supporting-base or truck-frame, and provided with a swinging gate pivotally connected with the body and upheld during the operation of tilting the body by a support having a shifting point of connection with the supporting-base or truck-frame. 2. A dumping-car or the like comprising a tilting body supported by a rocker-base upon a suitable supporting-base or truck-frame; and a swinging gate having arms which are pivoted to the tilting body and provided with supports having rollers which bear upon and traverse the supporting-base or truck-frame and serve to uphold the gate when thebody is' tilted A dumping-car truck-frame;- a normally -balanced tilting body provided witha rocker-base arranged to bear androck .upon the truck-frame; and side gateshaving arms which are pivoted to the ends of the tilting body'and provided with pendent supports or 'brackets, each having a roller arranged to bear upon and traverse the 'truck frame. v

{iQA dumping-car comprising a wheeled truck-frame; a tiltingbody having a rockerbase arranged to bear and rock upon the truck- 'frame; and aside gate having end arms piv oted to opposite ends of the tilting body and each rigid with a pendent bracket or hanger provided'with a, roller arranged to bear upon and traverse the truck-frame. l 5, A dumping-car comprising a wheeled truck-frame constructed with transversely-- arran ged rails; atiltin g body having a rocker;

'- base-composed of rockers arranged to engage comprising a wheeledandrock upon the transverse rails; and aside gate pivotally connected with opposite ends of the tilting body and provided with rolls which engageandtraverse the transverse rails and uphold the gate when the tilting v body is tilted. I

6. A dumping-car comprising a receptacle or body arranged to tilt about a horizontal and longitudinal axis, and a swinging side gate having arms which are pivoted to the tilting body, the axis about'which the said gate swings being coincident with the axis about which the receptacle or body tilts.

7. A dumping-car comprising a receptacle or body arranged to tilt about a horizontal, longitudinal and laterally-shifting axis, and a swinging side gate'having arms which are pivoted to the tilting body, the axis about which the said gate swings being coincident with the axis about which the receptacle or body tilts.

8. A dumping-car comprising a body ar-' ranged to tilt about a horizontal, longitudinai and laterally-shifting axis, and a couple of opposite side gates having arms which are pivoted to the said body, the axis about which the gates swing being coincident with the axis about which the body tilts, and each gate be-' ing provided with one or more supports which bear upon and traverse the truck-frame.

MORTON G. BUNNELL.

Witnesses:

ARTHUR F. DURAND CHAS. G. PAGE. 

